Java tutorial
/* * Copyright 2015 Giannakouris - Salalidis Victor * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.io.IOException; import java.util.HashMap; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.Text; import org.apache.mahout.math.VectorWritable; import com.gsvic.csmr.io.InputData; public class InputDataUsage { public static void main(String[] argv) throws IOException { Configuration conf = new Configuration(); Path in = new Path("tfidf-vectors/part-r-00000"); HashMap<Text, VectorWritable> doc = InputData.vectorizedTextReader(conf, in); for (java.util.Map.Entry<Text, VectorWritable> entry : doc.entrySet()) { System.out.println("Document ID: " + entry.getKey()); System.out.println("Vector: " + entry.getValue()); System.out.println("Dimensions: " + entry.getValue().get().size()); break; } } }